Perhaps you should try some spelling variations:
thong thuong » hang thuong, cong thuong, tvqg thuong
hanh han » hanh nhan, hanh phan, hanh san
he xanh » heo xanh, hoc xanh
han cua » hang cua, nhan cua, than cua
ma toan » va toan, manh toan, bai toan
ma tran » ha tran, m tran, tan tran
cho he » cho thue

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: cho he xanh - hanh han cua ((thong thuong) or (thong thong)) ((ma toan) OR (ma tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho he xanh - hanh han cua ((thong thuong) OR (thong thong)) ((ma toan) OR (ma tran)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho he xanh - hanh han cua ((thong thuong) or (thong thong)) ((ma toan) OR (ma tran)) cau".
• Adding a wildcard symbol may retrieve word variants: cho he xanh - hanh han cua ((thong thuong) or (thong thong)) ((ma toan) OR (ma tran)) cau*.